Offset Error Rosemount 1056 Analyzer with 3900VP pH Probe
Attempted to calibrate the analyzer. Offset error of 110 mV with a max possible 60 mV. Verified probe good with known functional analyzer.
9E DLN1 - Fail to go Premix Transfer
Frame 9E unit starts normally, but going from liquid fuel transfer to gas transfer unit goes into extended lean lean.
on 20 May, 2015 - 7:41 pm
Arun/kumara, I want to explain the Lean-Lean-to-Premix transfer a little better in the hopes...
Frame 9E Cooling Water System
Frame 9E Cooling Water System - Flame scanner overheating & Aft support legs temperature high
on 21 May, 2015 - 9:01 pm
Arun/kumara, My presumption was that the cooling water module was working properly--which I...
on 20 May, 2015 - 1:25 pm
Arun/kumara, Briefly, it certainly sounds like there is some obstruction in the cooling water...
Gas Turbine Efficiency/Power Output vs Relative Humidity and Specific Humidity
Posted by sriramsandeep on 1 April, 2015 - 1:15 pm
gas turbine efficiency/power output vs Relative humidity and Specific humidity
By hadi allahyari on 24 May, 2015 - 3:06 am
hi humidity effect according to GER 3567H (GE reference) has 2 different effect on gas turbine...
GE Gas leak Test Pass/Fail
How are the requirements/constants for passing or failing a gas leak test calculated?
Why we don't have the gas leak test for the Frame5 GE machine?
Speed Pickup vs Frequency Transducer for Speed Signal
Based on your experience, which sensor/signal is better for speed control in a generator, a speed pickup or a frequency transducer?
MEGAC and Fuel Gas Valve Control
Looking for information about MEGAC and fuel gas valve control of turbo-generator
Working Principle of Vibration sensor
Working principle of 5485C Metrix Velocity sensor.
By Anil on 22 May, 2015 - 9:10 am
I have some questions in this concept. How will it generate voltage? Means it will not directly...
Starting Clutches of GT Frame 7E
We have failure in our gas turbine's starting clutches
on 21 May, 2015 - 7:03 pm
Whenever a Aux. Hydraulic Pump is started it takes a short amount of time to build up pressure--the...
By Ayed on 21 May, 2015 - 1:32 am
thank you very much for your recommendations. However, let us check the following 1- to check...
on 20 May, 2015 - 11:24 am
Ayed, There are stories like yours all the time of small glitches in sequencing causing problems...
By Ayed on 20 May, 2015 - 8:31 am
thanks for those given advice. However, we need to lesson 1- did someone face like this problem...
on 18 May, 2015 - 8:44 pm
Ayed, Marafiq; those units are getting old--but it sounds like you're taking good care of them! ...
Coding Using LQR for Synchronous Generator
Posted by Engr Muhammad Zubair Ali on 21 May, 2015 - 1:12 pm
Need advice about coding using LQR for modeling and control of synchronous generator
False Start Drain Thermocouples
The purpose of the false start drain thermocouple sensors (WWTD-1, WWTD-2 in Frame 9E?
on 20 May, 2015 - 1:12 pm
hello, They are there to detect leakage of hot combustion gases when the unit is running to...
Purge Inlet and Control Temperature
Purge of inlet flow indicator and control temperature
Transformer - TX Abbreviation
What does the TX stand for in transformer abbreviation?
Sending a Command from Siemens Step7 to WINCC
How to send a command from the Step 7 PLC to the HMI that causes the HMI to change to a specified screen.
By Edmondo Bernardi on 20 May, 2015 - 4:26 am
It's possible by means area pointer in WinCC Flex in "Connections". In PLC side you...
GT not running at 100% rated RPM in Isochronous mode.
GT is not running at 100% rated speed when run in Isochronous mode but runs at 100% rated RPM when run in Droop mode.
on 19 May, 2015 - 10:51 pm
CSA, Thank you for the reply. Both our units are running TMR Mark6, both are commissioned at...
By SB on 19 May, 2015 - 4:03 am
CSA, Thank you for your reply. >When the unit that doesn't have speed issues when running...
on 18 May, 2015 - 9:27 am
SB, When the unit that doesn't have speed issues when running in Isoch mode is in Isoch mode,...
ABB Infi 90 Power supply PFI
Frequent Failure of ABB INFI 90 DCS power supply (PFI)
Faulty Readings on my Power Meters
One power meter on the outgoing line control panel giveing less than half of the correct power output
How to reset the counters of Fired hours on Speedtronic Mark 5
on 19 May, 2015 - 12:40 pm
The Mark V keeps a copy of the values of timers and counters in RAM, and another one in EEPROM. I...
By mhwest on 18 May, 2015 - 7:48 pm
I never had to change Mk-5 counters during the years I worked for GE, but I have done so a couple...
on 17 May, 2015 - 8:01 pm
DAMENE, The only way I know of to change the values of timers and/or counters is to send your...
GCP, PMS AND DCS INTERFACE
It would be interesting to know the interface between a (GCP), (PMS) and DCS.
on 19 May, 2015 - 10:57 am
Hello, I don't see a description of what the DCS does. Does it just display information from the...
Unit Failing to Synchronize to the Fystem
In a 1MW mini hydro with two 5ookW units, the station operates in islanded mode. Lately synchronizing using unit 2 is a problem, because immediately you start the voltage will keep rising.
Westinghouse WDPF controller sporadically drops off the highway
MODBUS TCP vs IEC 61850 for Switchgears and Substations
Looking for a comparison between MODBUS TCP vs IEC 61850 for switchgears and substations
Frequent tripping of cooling water motors fans breakers
Cable Differential Tripping
Spurious tripping due to cable differential protection operation
By Sohaib on 18 May, 2015 - 8:55 am
Dear Phil, I have tried to answer your questions below, please let me know if any further info...